Nickel doping effect on structure and ac conductivity of resorcinol formaldehyde/SiO2-Ni nanocomposites synthesized by sol–gel process

• Published in: Journal of materials science. Materials in electronics 2020-12, Vol.31 (23), p.21540-21547
• Main Authors: Gouadria, Soumaya, Almoneef, Maha M., Alshammari, Marzook Saleh, Alanazi, Amal Faleh, Omri, K.
• Format: Article
• Language: English
• Subjects: Carbon; Characterization and Evaluation of Materials; Chemistry and Materials Science; Crystallites; Diffraction patterns; Doping; Formaldehyde; Materials Science; Nanocomposites; Nanoparticles; Nickel; Optical and Electronic Materials; Silicon dioxide; Sol-gel processes; Synthesis
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-020-04667-y

The sol–gel synthesis of silica/carbon nanocomposite was modified with nickel in order to enhance the dispersion of silica nano-powder in the carbon matrix. The synthesized doped nanocomposite RF/SiO 2 -Ni 5% ( S-RF ) is composed of carbon matrix based on resorcinol formaldehyde (RF) as observed in the X-ray diffraction patterns and by scanning electron microscopy characterization. The average sizes of the crystallite of the S-RF are presented in the 13–17 nm range. FTIR Spectroscopy analysis showed that the band at just about 1040 cm −1 is associated to vibrations of Si–O–Si. The addition of nickel improves the interaction between the matrix and the nanoparticles, which appears well at 1100 °C. Moreover, the influences of the doping of Ni in the S-RF nanocomposite were analyzed.